http://becomesovran.i2p/blog/privacy-and-what-its-means-going-forward.html
When you interact with social media, use a free email service, send a file via cloud storage, shop online, or use your GPS to navigate to lunch, you generate data. Data about your health, your spending habits, the places you go, who you hang out with, and your entertainment preferences. Both corporations and governments find this data to be extremely valuable.